[ECOS] migration from win2k to win7

[Christopher Biessener <christopherpb at voomtech dot com>]

Hi all,

I am new to embedded systems and got handed the task of migrating our 
build environment from win2k to win7.
In win2k they are using Cygwin 1.3 / eCos 1.3.1 / gcc 2.95 toolchain.  
This setup compiles and links and our hardware runs beautifully.  We 
can't keep limping along on win2k, however.

The arm-elf 2.95 toolchain will not install in win7, so I began 
upgrading stuff.
So far I have the newest Cygwin 1.7 - which uses gcc 4.5.3.  I 
downloaded the arm-elf toolchain via MacCraigor Systems website which is 
gcc 4.6.0.  I cannot find the arm-elf toolchain in any other rev-level.
Apparently eCos 1.3.1 is still viable and it did install on win7, so 
that is what I used.
I am afraid of upgrading to eCos 3.0 because I have no idea what 
configuration options were used.  There is no documentation the original 
developers left - and yes, they are long gone.

At first gcc couldn't find libgcc, so I added 
-L/usr/lib/gcc/i686-pc-cygwin/4.5.3 to the link flags.
Without further changing our makefiles everything compiled, but it will 
not link.  The following is part of the output of make:
----------------------
arm-elf-gcc -mcpu=arm7tdmi -u cyg_user_start 
-Wl,'-Map=HC3-P_Hw_Cf_P1.map'  -nostartfiles  -Wl,--gc-sections 
-L./romram_install/lib  -L/usr/lib/gcc/i686-pc-cygwin/4.5.3 -o 
HC3-P_Hw_Cf_P1.elf libHC3-P_Hw_Cf_P1.a libromHC3-P_Hw_Cf_P1.a 
-TtargetHC3-P_Hw_Cf_P1.ld  -nostdlib
libromHC3-P_Hw_Cf_P1.a(HardCopy.o): In function 
`__static_initialization_and_destruction_0(int, int)':
HardCopy.cpp:(.text._Z41__static_initialization_and_destruction_0ii+0x48): 
undefined reference to `__cxa_atexit'
HardCopy.cpp:(.text._Z41__static_initialization_and_destruction_0ii+0x60): 
undefined reference to `__dso_handle'
libromHC3-P_Hw_Cf_P1.a(fat32.o): In function 
`CFAT32::InitBootSector(FAT32_BOOT_SECTOR*, FAT32_FSINFO_SECTOR*)':
fat32.cpp:(.text._ZN6CFAT3214InitBootSectorEP17FAT32_BOOT_SECTORP19FAT32_FSINFO_SECTOR+0x118): 
undefined reference to `__umodsi3'
fat32.cpp:(.text._ZN6CFAT3214InitBootSectorEP17FAT32_BOOT_SECTORP19FAT32_FSINFO_SECTOR+0x150): 
undefined reference to `__udivsi3'
----------------------

Any suggestions would be greatly appreciated.  I did begin by searching 
the list archive.  There were no solutions to be found.

Thanks,

Christopher Biessener
Voom Technologies, Inc.


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